YAML: Singular or Plural is valid?

[severdia]

I have YAML metadata in my files that shows the list of one or more authors.

But it shows as invalid (“Type mismatch”).

Sometimes there’s a single author and sometimes multiple. Both show the same error. I’ve been trying to figure out what the cause might be since it looks correct. I discovered that when I use a singular form of a property (“Author”), it shows as invalid, but when I change it to plural (“Authors”) it shows as valid.

Why is Obsidian forcing me to use the plural name of a property for it to be valid?

[RoyRogers]

Is it possible that you have another property named Author defined in the vault? Check the “All Properties” view to locate.

[severdia]

No, there’s only one “Author” property. This is a vault specifically for files with this same YAML metadata, so it’s “clean” in that sense.

[RoyRogers]

Well, in my vault plurality doesn’t matter. Author and Authors list properties each work without errors.

[holroy]

If you look at the icon in front of the one with the warning it says that this is a “text” field. It doesn’t care about what you’ve written as a name. You need to change the type by clicking on the icon and select Property type > List, and then the warning will go away.

[severdia]

Ah, this is the issue. The types.json file didn’t have that property defined as multitext. Thanks @holroy .